PR30 Standard Flashlight PR Replacement Light Bulb: Description - Standard replacement flashlight bulb - 3.75 Volt - 0.86 Amp - B-3-1/2 Single Contact Miniature Flanged Base (P13.5S) - C-2R Filament Design - 2.25 MSCP. - 40 Average Rated Hours - 1.25" Maximum Overall Length - 0.45" Maximum Overall Diameter - Typically found in flashlights using a rechargeable 3.75 volt battery.PR30 Standard Flashlight PR Replacement Light Bulb